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Information source
About: Information source is a research topic. Over the lifetime, 2324 publications have been published within this topic receiving 51439 citations.
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Proceedings Article•
03 Sep 1996
TL;DR: The Information Manifold is described, an implemented system that provides uniform access to a heterogeneous collection of more than 100 information sources, many of them on the WWW, and algorithms that use the source descriptions to prune effciently the set of information sources for a given query are described.
Abstract: We witness a rapid increase in the number of structured information sources that are available online, especially on the WWW. These sources include commercial databases on product information, stock market information, real estate, automobiles, and entertainment. We would like to use the data stored in these databases to answer complex queries that go beyond keyword searches. We face the following challenges: (1) Several information sources store interrelated data, and any query-answering system must understand the relationships between their contents. (2) Many sources are not full-featured database systems and can answer only a small set of queries over their data (for example, forms on the WWW restrict the set of queries one can (3) Since the number of sources is very large, effective techniques are needed to prune the set of information sources accessed to answer a query. (4) The details of interacting with each source vary greatly. We describe the Information Manifold, an implemented system that provides uniform access to a heterogeneous collection of more than 100 information sources, many of them on the WWW. IM tackles the above problems by providing a mechanism to describe declaratively the contents and query capabilities of available information sources. There is a clean separation between the declarative source description and the actual details of interacting with an information source. We describe algorithms that use the source descriptions to prune effciently the set of information sources for a given query and practical algorithms to generate executable query plans. The query plans we generate can inolve querying several information sources and combining their answers. We also present experimental studies that indicate that the architecture and algorithms used in the Information Manifold scale up well to several hundred information sources
1,302 citations
TL;DR: Patients' information needs and sources along the continuum of care found that during diagnosis and treatment, information needs about the stage of disease, treatment options, and side-effects of treatment were prominent; during post-treatment, patients continued to need information about treatment, and information about recovery was also important.
884 citations
TL;DR: Although it is unlikely to supplant the role of trusted peers and adults, the internet has found an important place among adolescents' repertory of health information sources.
732 citations
TL;DR: T h e score for e ach new T M was t he cos ine b e t w e e n t he T M vec tor a n d the nearest i n t e r e s t vector .
Abstract: 10345 Abstract 10346 Abstract 10347 Abstract 10348 :iltered Abstracts Abstract 10349 Abstract 1040210349 Abstract 10402 Highly rated abstracts added to document profile each month T h e score for e ach new T M was t he cos ine b e t w e e n t he T M vec tor a n d the nearest i n t e r e s t vector . T h e new T M s were t h e n r a n k e d based o n the i r m a x i m u m cosine score. T h u s , T M s o c c u r r i n g close to any p o i n t o f i n t e r e s t fo r a p a r t i c u l a r e m p l o y e e would be r a n k e d t he h ighes t . T h e same type o f c o m p a r i s o n was d o n e fo r the d o c u m e n t prof i les . Each docu m e n t in t he d o c u m e n t p rof i l e was r e p r e s e n t e d as a s epa ra t e vec tor a n d c o m p a r e d to all new T M s . T h e new T M s were t h e n r a n k e d based o n the m a x i m u m cosine for e ach T M to any d o c u m e n t in t he d o c u m e n t prof i le . T h e s e c o m p a r i s o n s r e su l t ed in f o u r r a n k o r d e r e d lists o f abstracts , o n e for e ach f i l t e r ing m e t h o d . T h e top abs t rac t s f r o m each m e t h o d were t h e n sen t to each emp loyee , w h o r a t e d t h e m fo r r e l evance to his o r h e r t echn ica l in teres ts . Fo r each m e t h o d , the t op 25% o f t he abs t rac t s r a t e d 4 or h i g h e r were t h e n i n c o r p o r a t e d in to t he e m p l o y e e s ' d o c u m e n t p ro files. 3 I n the f i rs t m o n t h o f s tudy, on ly the w o r d prof i l e was u sed s ince e m p l o y e e s h a d no t p rev ious ly indica ted which abs t rac t s to i nc lude in t h e i r d o c u m e n t prof i le . I n the subseFlOure 11. The f i l t e r i n g p r o c e s s Table 1. The four f i l ter ing methods
628 citations
TL;DR: In this paper, a Bayesian consumer who is uncertain about the quality of an information source will infer that the source is of higher quality when its reports conform to the consumer's prior expectations.
Abstract: A Bayesian consumer who is uncertain about the quality of an information source will infer that the source is of higher quality when its reports conform to the consumer’s prior expectations. We use...
610 citations